If a mod wants to merge my thread with this one, I think that could make sense. Both of these seem to be addressing the same/very similar issue.
dGPU Crashing - Fedora 41 - Framework Laptop 16 - Framework Community
Unfortunately I can’t test my Arch install further right now because my UEFI boot option on that drive appears to have disappeared, and the guide I wrote for fixing that issue no longer seems to be doing the trick.
Edit: I have put in a support ticket for this issue.